Should i take my zoloft (sertraline) 75 mg long term or should i consult my doctor to find something else to take for maintenance ?

Zoloft (sertraline) isn't a short: term fix. It is an SSRI, a selective serotonin reuptake inhibitor. For it to be effective, you need to establish & maintain a steady-state in your blood/body. You may not have given it enough of a chance to work yet. Don't stop "cold turkey," ie suddenly. Will be uncomfortable. At that dose, you'll definitely want a supervised gentle taper. Discuss with your prescriber.